Strange but true

I was standing in front of my building when I noticed a man in a suit bend down, pick up an old cigarette butt and light it. He finished it, threw it away and then walked into a convenience store. 
Soon after he came out he handed me a bag with a can of coffee. 

" I bought this for you."   he said. 

Then he just walked away. 

~Tim~

*cigarette butt: 吸い殻